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Q.1. Clostridium and Streptococcus are both catalase-negative. Streptococcus grows by fermentation. Why is Clostridium killed by oxygen, whereas Streptococcus is not?
2. Assume that after washing your hands, you leave ten bacteria cells on new bar of soap. You then make a decision to do plate count of the soap after it was left in the soap dish for 24 hours. You dilute 1g of the soap 1:106 and plate it on standard plate count agar. After 24 hours of incubation, there are 168 colonies. How numerous bacteria were on the soap? How did they get there?3. Why is each of the bacteria often resistant to disinfectants?
1. Mycobacterium
2. Pseudomonas
3. Bacillus
4. Describe why gram-negative bacteria are more resistant to biocides than gram-positive bacteria. Be exact and descriptive in the response. A description of the differences between gram-negative and gram-positive bacteria must be included, along with an explanation of why any of those differences would have anything to do with the actions of biocides.
White tigers are indicated with unshaded symbols. (As you can see, there was considerable inbreeding in this lineage. For instance, the white tiger Mohan was mated with his daughter). In answering the questions, assume that hite.
List two possible mutations that might cause this phenotype. Be as specific as possible about the location of mutation. What led physician to make this diagnosis, and what might have caused the sudden attack.
At the present we know that over 99 percent of the time, glucose occurs in the closed-ring form. What likely difference between these forms would give chemists a clue that the open-chain form was not present.
Why is it significant for clinical laboratory personnel to follow proper methods of sterilization and specimen control.
Explain why bacteria do not have apoptotic signaling pathways.
Under constant erosion and weathering, the pyrites leech large amounts of sulfuric acid (H2SO4). The spoil banks are also mixed with large quantities of basic limestone and clay carbonates. What have to occur over time.
A diagnostic of phlebitis was made. What is Phlebitis and what more serious condition may result if proper healing doesn't occur? What is the treatment for this patient and what will be the likely outcome from this disease.
If the fox were to feed only on insect-eating birds, how many square meters of plant material would be necessary.
The cell walls of bacteria, fungi, and plant cells and the extracellular matrix of animal cells are all external to the plasma membrane. Which of the following is a characteristic of all of these extracellular structures.
If there was mutation in a dna triplet that changed the first triplet from ctt to ctc, would that cause the problem with the resulting polypeptide.
Your assignment, if you want to accept this, is to cross two of the F1 offspring and complete Punnett square for this cross and then write the resulting genotype and phenotypes. This must be 100 percent completely done for any extra credit. Your cros..
Find out the genotypes of the parents and their pups. Use Punnett Squares to demonstrate your answers. What did Mendel observe in the F2 offspring that showed him that alleles for seed shape segregate separately of those for seed colour.
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